Telephone-bell cut-out.



i No. 655,849. Patented Aug. 14, I900.

L. F COBB. I

TELEPHONE BELL CUT-OUT.

(Application filed Jan. 6, 1900.) (No Model.)

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Wfitnesses. Inventor.

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No. 555,849. Patented mm. 54, 39W. L. F, BUB. TELEPHONE BELL GUT-0UT.

(Application filed Jan. 6,, 1900.]

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' (No Model.)

Inventor.

Witnesses.

luff/ER I? 0058 I Agttorneys UNITED STATES PATENT OFFICE.

TELEPHONE-BELL CUT-OUT.

SPECIFICATION forming part of Letters Patent N 0. 656,849, dated August 14, 1900. Application filed January 6, 1900. Serial. No. 637. (No model.)

To all whom, it may concern.-

Be it known that I, LUTHER F. COBB, of

Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Telephone- Bell Cut-uts; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this Specification.

This invention relates to that class of elec- Iric ut-outs used in telephone systems where more than one hell is included in one circuit.

1t isfully explained and illustrated in the specification and the accompanying drawlugs.

Figure 1 shows the instrument in elevation and a diagram of the operating-lines. Figs. 2, 3, and 4 represent the different positions of the indicating-plate in four instruments on the same wire or line. Fig. 5 shows a series of telephone-bell cut-outs connected in multiple.

The object of this invention is to avoid the necessity on circuits including more than one I bell of ringing any of the bells except the one that is desired to communicate with.

The construction and operation are as follows:

A is a circular disk, made of some non-conducting materiaL-such as hard rubber, for

instance. This disk A is turned by clockwork (not shown) or may be operated by any motive power. This diskA is held from turning when not in use by means of a spring-catch B, which is arranged to drop into a notch a in the edge of the disk when it comes under it. The catch B is made of soft iron or steel and is drawn up out of the notcha when itis desired to have the disk turn by means of an electric magnet O, which will attract the catch and raise it out of the notch when the mag: net is energized by an electric current passing through its coils.

'D D are two metallic knobs or points fastened on the free ends of the metallic rods respectively, and the rods are held at their outer ends in the posts F F, so that the points will just clear the surface of the disk.

A met-allic'plate G, of a segment shape and occupying about one-eighth of a circle,is made fast on the faceof the disk and is sufficiently raised'above the surface of the disk to insure its contact with "the balls I) D as the plate passes under them.

Each hell on the circuit is provided-with one of the instruments-that is,theelectromagnet O, the spring-catch B, the two rods with points D D, and the disk with the plate G, only that the plate Gr 3, and 4, quartering to each other when the notch a. is held by the catch B. The clockwork of each instrument is regulated to turn each disk in the same space of time-say, for illustration, twenty-five seconds. In the first instrument the plate G is set on the right hand of the disk A, as in Fig. l. The plate for the second bell is set on the lower quarter of its disk, as in Fig. 2, the plate for the third bell is set on its disk on the left hand of the disk, as in Fig. 3, and the plate for the fourth bell is set on the upper quarter of its disk, as im Fig. 4;. The two wires b and c, which are usually connected with the hell, are connected in this case with the electromagnet G at L and M, and when the puslrbutton J is pressed the current will pass through the electromagnet-wires and cause the magnet to attractand raise all the catches D of the four instruments and allow each disk to be turned by its own clockwork at the same moment, and if the sender of the signal wants to call up the first bell on, the circuit five seconds are allowed for the plate on under the points D and D Then by again pressing the button the current will pass down through the wire and points around to the bell at N and ring it; but if it is the second hell that is to be called up ten seconds are allowed the plate on the second bell-disk to come under the points D D, when by pressing the button. the current will pass through them and ring the second bell, and in like manner a wait of fifteen seconds would make a connection with the third bell, and twenty seconds would make a connection to ring the fourth bell. The spaces of time are only used for illustration, as they may be much shorter, and the number of bells on the circuit may be more or less, the only change that would have to be made would be in the number of plates used and in dividing the face of the is placed differently on each of the four disks, as represented in Figs. 1,2,

the first disk to come disk into regular spaces, according to the number of plates and bells.

I In Fig. 5 is-shown aseries of telephone-bell cut-outs connected in multiple and in which the operation is. substantially the-same as with a single cut-out. These cut-outs may be arranged any'suit-able distance apart 1] pen the telephone-line and are connected substantially as shown.

Having thus described my improvements,

I claim as my invention and desire to secure by Letters Patent '1. A revoluble non-cond uc'ting disk A pro- I vided with a metallic segment upon its side,

' upon their ends;

the two stationary rods provided with points and which have their upper ends to extend inwardly past the outer edge of the disk so as to come in contact with the segment, a catch for engaging with a notch in the edge of the disk, and an electromagnet for operating the catch, combined with the push-button, the wires 12, c,iconneeted there.-

with, wires extending from the electromagnet and connecting with the wiresb, c, the wire bbeing connected to one of the rods,'an

alarm-bell connected to the wire 0, and a wire .to release said catches extending from the alarm-hell to the other stationary rod; the parts being combined and arranged to operate, substantially shown.

2. In a cut-out fo'r telephone-bells, two or more revoluble disks having plates -of metal attached to their faces, the shunt-circuit, points connected to the shunt-circuit and held so as to make contact with the plates, thereby closing said circuit,'and catches to hold said disks from turning, combined with electroniaguets, of high resistanceconnected in multiple, which allows them to be energized by either a continuous or an alternating current from the disk, a bell for each disk con nected with its contact-points so as to ring the bell when said disk closes the circnit by coming in contact wilh said points, substantially as described.

In testimony whereof I have hereunto set my hand this 27th day of December, A. D. 1899.

BEN-T. ARNOLD, M. E. CLEVELAND. 

